InChI=1/C20H18ClNO4/c1-26-18-11-12(13-5-2-3-8-16(13)21)9-10-17(18)22-19(23)14-6-4-7-15(14)20(24)25/h2-3,5,8-11H,4,6-7H2,1H3,(H,22,23)(H,24,25)/p-1/fC20H17ClNO4/h22H/q-1 F2B592D6BBBB13A7